CN113206974A - Video picture switching method and system - Google Patents
Video picture switching method and system Download PDFInfo
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- CN113206974A CN113206974A CN202110432422.6A CN202110432422A CN113206974A CN 113206974 A CN113206974 A CN 113206974A CN 202110432422 A CN202110432422 A CN 202110432422A CN 113206974 A CN113206974 A CN 113206974A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/431—Generation of visual interfaces for content selection or interaction; Content or additional data rendering
- H04N21/4312—Generation of visual interfaces for content selection or interaction; Content or additional data rendering involving specific graphical features, e.g. screen layout, special fonts or colors, blinking icons, highlights or animations
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Abstract
The invention discloses a video picture switching method and a system, wherein the method comprises the following steps: presetting a display layout; acquiring each display area and each video resolution of the video stream of the current voice excited person; when a second voice excited person is detected, acquiring each display area and each video resolution of a video stream of the second voice excited person; if the delay condition is met, confirming a delay time period according to the current bandwidth, and if the video stream of the second voice incentive person with the video resolution not less than the preset value is successfully acquired within the delay time period started at the first moment, immediately displaying the video stream of the second voice incentive person with the video resolution not less than the preset value in a display area corresponding to the maximum video resolution of the current voice incentive person. The invention can reduce the repeated check flow, stabilize the picture, reduce the network bandwidth and the like.
Description
Technical Field
The present invention relates to the field of video communication technologies, and in particular, to a method and a system for switching video frames.
Background
With the development of internet communication technology, video conferencing is widely applied. The most advanced video conference systems at present generally have a function of displaying a video stream of a speaker immediately when the speaker speaks.
The inventor finds that the current video conference solution has the following main problems in the process of implementing the invention: when a video picture executes the video stream switching of a speaker in a voice excitation mode, the problems of video blurring and discontinuity can occur, and the picture quality is influenced; and there are often times when the stream is re-selected, such as when the last voice actor needs to re-select the stream if he speaks again, which can result in wasted network bandwidth. In addition, when two people speak alternately and frequently, the video pictures are switched back and forth to cause overall visual jitter.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a video picture switching method and a video picture switching system, which can reduce repeated check stream, stabilize the picture, reduce the network bandwidth and the like.
In order to achieve the above object, the present invention provides a video picture switching method, including: presetting a display layout on a display screen, so that the display screen is divided into a plurality of display areas, wherein the sizes of the plurality of display areas are not completely the same; acquiring each display area of the video stream of the current voice incentive person displayed in the current display screen and each video resolution of the video stream of the current voice incentive person displayed in the current display screen, and selecting the maximum video resolution from the display areas; when a second voice excited person is detected, acquiring each display area of the video stream of the second voice excited person displayed in the current display screen and each video resolution of the video stream of the second voice excited person displayed in the current display screen, and selecting the maximum video resolution from the display areas; if the selected maximum video resolution corresponding to the current voice incentive is larger than the video resolution of the video stream to be displayed of the second voice incentive and the selected maximum video resolution corresponding to the second voice incentive is smaller than a preset value, confirming a delay time period according to the current bandwidth, recording a first moment when the delay time period is confirmed, and starting to acquire the video stream of the second voice incentive with the video resolution not smaller than the preset value at the first moment; if the video stream of the second voice excited person with the video resolution not less than the preset value is successfully acquired within the delay time period from the first moment, the video stream of the second voice excited person with the video resolution not less than the preset value is displayed in a display area corresponding to the maximum video resolution of the current voice excited person immediately.
In an embodiment of the present invention, after detecting the second voice-excited person, acquiring each display area of the video stream of the second voice-excited person displayed in the current display screen and each video resolution of the video stream of the second voice-excited person displayed in the current display screen, and selecting the maximum video resolution therefrom includes: and if the video stream of the second voice excited person does not have the corresponding display area, setting the selected maximum video resolution corresponding to the second voice excited person as 0.
In an embodiment of the present invention, the video screen switching method further includes: and if the video stream of the second voice incentive person with the video resolution not less than the preset value is not obtained after the delay time period started at the first moment is ended, immediately displaying the video stream to be displayed of the second voice incentive person in a display area corresponding to the maximum video resolution of the current voice incentive person after the delay time period is ended.
In an embodiment of the present invention, the video screen switching method further includes: when the display area corresponding to the maximum video resolution of the current voice incentive is occupied by the video stream of the second voice incentive, judging whether the display area exists in other current display areas and the video stream of the current voice incentive is displayed, if the display area does not exist in other current display areas and the video stream of the second voice incentive has a corresponding display area before the display area corresponding to the current voice incentive occupies, displaying the video stream of the current voice incentive, which is received after the display area corresponding to the maximum video resolution of the current voice incentive is occupied by the video stream of the second voice incentive for a preset time period, in the display area corresponding to the video stream of the second voice incentive after the resolution of the video stream of the current voice incentive is reduced, wherein the video stream of the current voice incentive corresponds to the display area of the second voice incentive.
In an embodiment of the present invention, the video screen switching method further includes: when the display area corresponding to the maximum video resolution of the current voice-excited person is occupied by the video stream of the second voice-excited person, judging whether a display area exists in the current other display area to display the video stream of the current voice incentive person, if the display area does not exist in the current other display area to display the video stream of the current voice incentive person and the video stream of the second voice incentive person does not have a corresponding display area before occupying the display area corresponding to the current voice incentive person, and displaying the video stream to be displayed of the current voice excited person, which is received after the preset time period after the display area corresponding to the maximum video resolution of the current voice excited person is occupied by the video stream of the second voice excited person, in other unoccupied display areas after the video resolution is reduced.
Based on the same inventive concept, the present invention also provides a video picture switching system, comprising: the device comprises a layout module, a first acquisition module, a second acquisition module, a delay module and a display switching module. The layout module is used for presetting a display layout on a display screen, so that the display screen is divided into a plurality of display areas, wherein the sizes of the display areas are not completely the same. The first obtaining module is coupled with the layout module and is used for obtaining each display area of the video stream of the current voice incentive person displayed in the current display screen and each video resolution of the video stream of the current voice incentive person displayed in the current display screen and selecting the maximum video resolution from the display areas. And the second acquisition module is coupled with the layout module and used for acquiring each display area of the video stream of the second voice-excited person displayed in the current display screen and each video resolution of the video stream of the second voice-excited person displayed in the current display screen after the second voice-excited person is detected, and selecting the maximum video resolution from the display areas. The delay module is coupled to the first obtaining module and the second obtaining module, and configured to, if the selected maximum video resolution corresponding to the current voice incentive is greater than the video resolution of the video stream to be displayed of the second voice incentive and the selected maximum video resolution corresponding to the second voice incentive is smaller than a preset value, determine a delay time period according to a current bandwidth, record a first time at which the delay time period is determined, and start to obtain the video stream of the second voice incentive at the first time, where the video resolution is not smaller than the preset value. And the display switching module is coupled with the delay module and used for instantly displaying the video stream of the second voice-stimulated person, of which the video resolution is not less than the preset value, in a display area corresponding to the maximum video resolution of the current voice-stimulated person if the video stream of the second voice-stimulated person, of which the video resolution is not less than the preset value, is successfully acquired within a delay time period starting at the first moment.
In an embodiment of the present invention, the display switching module is further configured to, if the video stream of the second voice-excited person with the video resolution not less than the preset value is not obtained after a delay time period started at the first time is ended, immediately display the video stream to be displayed of the second voice-excited person in a display area corresponding to the maximum video resolution of the current voice-excited person after the delay time period is ended.
In an embodiment of the present invention, the display switching module is further configured to determine whether a display area exists in other current display areas when the display area corresponding to the maximum video resolution of the current voice-excited person is occupied by the video stream of the second voice-excited person, and if the display area does not exist in other current display areas and the video stream of the second voice-excited person has a corresponding display area before occupying the display area corresponding to the current voice-excited person, decrease a resolution of the video stream to be displayed of the current voice-excited person, which is received after a preset time period after the display area corresponding to the maximum video resolution of the current voice-excited person is occupied by the video stream of the second voice-excited person, and then display the video stream to be displayed of the second voice-excited person after occupying the video stream to be displayed of the current voice-excited person after occupying the video stream of the current voice-excited person for the preset time period after the display area corresponding to the maximum video resolution of the current voice-excited person is occupied by the video stream of the second voice-excited person The voice stimulates the display area corresponding to the person in front of the corresponding display area.
In an embodiment of the present invention, the display switching module is further configured to, after a display area corresponding to the maximum video resolution of the current voice-excited person is occupied by the video stream of the second voice-excited person, judging whether a display area exists in the current other display area to display the video stream of the current voice incentive person, if the display area does not exist in the current other display area to display the video stream of the current voice incentive person and the video stream of the second voice incentive person does not have a corresponding display area before occupying the display area corresponding to the current voice incentive person, and displaying the video stream to be displayed of the current voice excited person, which is received after the preset time period after the display area corresponding to the maximum video resolution of the current voice excited person is occupied by the video stream of the second voice excited person, in other unoccupied display areas after the video resolution is reduced.
Based on the same inventive concept, the present invention also provides a non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the video picture switching method according to any one of the above embodiments.
Compared with the prior art, according to the video image switching method of the invention, when voice excitation switching occurs, if the current resolution of the video stream of the second voice exciter can not meet the definition requirement, but the resolution of the video stream of the current voice exciter is better, intelligent delay switching is started, delay time is dynamically confirmed according to bandwidth, the video stream of the second voice exciter with higher video resolution is obtained in a delay time period, if the video stream of the second voice exciter is obtained, the video stream of the second voice exciter is timely displayed in the optimal display area of the last voice exciter (namely the current voice exciter), the display requirement of the high-definition video of the voice exciter in a conference is ensured as much as possible, the fuzzy and discontinuous conditions during video switching are avoided, and the delay is adjusted according to the bandwidth, so that the video meeting the requirement can be switched in time after being successfully obtained, and through multiple display layouts, a plurality of video streams can be displayed on the same display screen at the same time, so that the video stream of the previous voice incentive person and the video stream of the second voice incentive person can be displayed on the same screen at the same time, the problems of repeated stream selection and visual jitter caused by alternate frequent speech of the two persons are avoided, and the user experience quality is improved.
Drawings
FIG. 1 is a block diagram of steps of a video frame switching method according to an embodiment of the present invention;
FIG. 2 is a screen layout according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a current screen display effect according to an embodiment of the present invention;
fig. 4 is a block diagram of a video frame switching system according to an embodiment of the present invention.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
In order to overcome the problems in the prior art, in one embodiment, a video frame switching method is provided, as shown in fig. 1, the method includes steps S1 to S5.
In step S1, a display layout on a display screen is set in advance such that the display screen is divided into a plurality of display regions, wherein the sizes of the plurality of display regions are not completely the same. By setting a plurality of display areas, video streams of a plurality of persons can be displayed simultaneously. Fig. 2 is an alternative seven-division screen layout manner, where the display screen shown in fig. 2 may be an entire screen, or may be a screen combining a tiled screen and multiple screens.
In step S2, the respective display areas of the video stream of the current voice incentive displayed in the current display screen and the respective video resolutions of the video stream of the current voice incentive displayed in the current display screen are acquired, and the maximum video resolution is selected therefrom.
In step S3, after the second voice-excited person is detected, each display area of the video stream of the second voice-excited person displayed in the current display screen and each video resolution of the video stream of the second voice-excited person displayed in the current display screen are acquired, and the maximum video resolution is selected therefrom. And if the video stream of the second voice excited person does not have a corresponding display area, setting the selected maximum video resolution corresponding to the second voice excited person as 0.
Fig. 3 is a schematic view of a display effect of the current display screen according to this embodiment. The current voice-excited person S1 has two display areas, i.e., a larger display area R11 and a smaller display area R12, which correspond to video stream resolutions of V11 and V12, respectively, and the second voice-excited person S2 has a display area, i.e., a smaller display area R21, which corresponds to video resolution of V21, respectively, and the display area R21.
In step S4, if the selected maximum video resolution V11 corresponding to the current voice-excited person is greater than the video resolution of the video stream to be displayed of the second voice-excited person, and the selected maximum video resolution V21 corresponding to the second voice-excited person is less than the preset value, determining a delay time period according to the current bandwidth, recording a first time at which the delay time period is determined, and starting to acquire the video stream of the second voice-excited person whose video resolution is not less than the preset value at the first time.
In step S5, if the video stream of the second voice-excited person with the video resolution not less than the preset value is successfully acquired within the delay time period from the first time, the video stream of the second voice-excited person with the video resolution not less than the preset value is displayed in the display area R11 corresponding to the maximum video resolution of the current voice-excited person immediately. The display area R12 still remains displaying the video stream of the current voice-activated person. The preset value is set according to the definition requirement of the user on the video.
Therefore, in the embodiment, when the voice stimulus switching occurs, if the current resolution of the video stream of the second voice stimulus person cannot meet the requirement of definition, and the resolution of the video stream of the current voice stimulus person is better, the intelligent time-delay switching is started, the time delay time is dynamically determined according to the bandwidth, the video stream of the second voice stimulus person with higher video resolution is obtained in the time delay period, if the video stream of the second voice stimulus person is obtained, the video stream of the second voice stimulus person is timely displayed in the optimal display area of the last voice stimulus person (i.e. the current voice stimulus person), the display requirement of the high-definition video of the voice stimulus person in the conference is ensured as much as possible, the fuzzy and discontinuous conditions in the video switching are avoided, the time delay is adjusted according to the bandwidth, the video meeting the requirement can be ensured to be timely switched after being successfully obtained, and a plurality of display layouts are used, a plurality of video streams can be displayed on the same display screen at the same time, so that the video stream of the previous voice incentive person and the video stream of the second voice incentive person can be displayed on the same screen at the same time, the problems of repeated stream selection and visual jitter caused by alternate frequent speech of the two persons are avoided, and the user experience quality is improved.
Preferably, in an embodiment, the video picture switching method further includes: in step S5, if the video stream of the second voice-excited person with the video resolution not less than the preset value is not acquired after the delay time period started at the first time is ended, the video stream to be displayed of the second voice-excited person is displayed in the display area R11 corresponding to the maximum video resolution of the current voice-excited person immediately after the delay time period is ended. Therefore, in this embodiment, when the delay time is up, the video stream of the second voice-excited person is forcibly displayed in the optimal display area of the previous voice-excited person no matter whether the video stream with the higher video resolution is acquired, so that it is avoided that the user cannot see the video stream of the second voice-excited person for too long, and after the video stream meeting the requirement arrives, the video stream is automatically displayed in the optimal display area of the previous voice-excited person.
Preferably, in an embodiment, the video picture switching method further includes: in step S5, after the display area corresponding to the maximum video resolution of the current voice-excited person is occupied by the video stream of the second voice-excited person, it is determined whether there is a display area in the current other display area that is displaying the video stream of the current voice-excited person, and if there is no display area in the current other display area that is displaying the video stream of the current voice-excited person and the video stream of the second voice-excited person has a corresponding display area before occupying the display area corresponding to the current voice-excited person, the video stream of the second voice-excited person that is displayed after the resolution of the video stream to be displayed of the current voice-excited person that is received after the display area corresponding to the maximum video resolution of the current voice-excited person is occupied by the video stream of the second voice-excited person is reduced by the resolution of the video stream to be displayed of the current voice-excited person that is displayed before occupying the display area corresponding to the current voice-excited person In the display area.
When the display area corresponding to the maximum video resolution of the current voice-excited person is occupied by the video stream of the second voice-excited person, judging whether a display area exists in the current other display area to display the video stream of the current voice incentive person, if the display area does not exist in the current other display area to display the video stream of the current voice incentive person and the video stream of the second voice incentive person does not have a corresponding display area before occupying the display area corresponding to the current voice incentive person, and displaying the video stream to be displayed of the current voice excited person, which is received after the preset time period after the display area corresponding to the maximum video resolution of the current voice excited person is occupied by the video stream of the second voice excited person, in other unoccupied display areas after the video resolution is reduced. Therefore, in this embodiment, if the video stream of the current voice-excited person has only one display area, when the video stream is occupied, the resolution of the delayed video stream of the current voice-excited person may be reduced and then the delayed video stream may be displayed in the original display area of the second voice-excited person or in other unoccupied display areas.
Based on the same inventive concept, an embodiment further provides a video picture switching system, as shown in fig. 4, the video picture switching system includes: the system comprises a layout module 10, a first acquisition module 11, a second acquisition module 12, a delay module 13 and a display switching module 14.
The layout module 10 is configured to preset a display layout on a display screen such that the display screen is divided into a plurality of display regions, wherein the plurality of display regions are not all the same size.
The first obtaining module 11 is coupled to the layout module 10, and is configured to obtain each display area of the video stream of the current voice-excited person displayed in the current display screen and each video resolution of the video stream of the current voice-excited person displayed in the current display screen, and select a maximum video resolution therefrom.
A second obtaining module 12 is coupled to the layout module 10, and configured to, after detecting the second voice-excited person, obtain each display area of the video stream of the second voice-excited person displayed in the current display screen and each video resolution of the video stream of the second voice-excited person displayed in the current display screen, and select a maximum video resolution therefrom. And if the video stream of the second voice excited person does not have a corresponding display area, setting the selected maximum video resolution corresponding to the second voice excited person as 0.
The delay module 13 is coupled to the first obtaining module 11 and the second obtaining module 12, and configured to determine a delay time period according to a current bandwidth, record a first time at which the delay time period is determined, and start to obtain the video stream of the second voice-excited person at the first time, where the video resolution is not less than the preset value, if the selected maximum video resolution corresponding to the current voice-excited person is greater than the video resolution of the video stream to be displayed of the second voice-excited person, and the selected maximum video resolution corresponding to the second voice-excited person is less than the preset value.
The display switching module 14 is coupled to the delay module 13, and configured to immediately display the video stream of the second voice-stimulated person, of which the video resolution is not less than the preset value, in a display area corresponding to the maximum video resolution of the current voice-stimulated person if the video stream of the second voice-stimulated person, of which the video resolution is not less than the preset value, is successfully acquired within a delay time period starting at the first time.
Therefore, in the embodiment, when the voice stimulus switching occurs, if the current resolution of the video stream of the second voice stimulus person cannot meet the requirement of definition, and the resolution of the video stream of the current voice stimulus person is better, the intelligent time-delay switching is started, the time delay time is dynamically determined according to the bandwidth, the video stream of the second voice stimulus person with higher video resolution is obtained in the time delay period, if the video stream of the second voice stimulus person is obtained, the video stream of the second voice stimulus person is timely displayed in the optimal display area of the last voice stimulus person (i.e. the current voice stimulus person), the display requirement of the high-definition video of the voice stimulus person in the conference is ensured as much as possible, the fuzzy and discontinuous conditions in the video switching are avoided, the time delay is adjusted according to the bandwidth, the video meeting the requirement can be ensured to be timely switched after being successfully obtained, and a plurality of display layouts are used, a plurality of video streams can be displayed on the same display screen at the same time, so that the video stream of the previous voice incentive person and the video stream of the second voice incentive person can be displayed on the same screen at the same time, the problems of repeated stream selection and visual jitter caused by alternate frequent speech of the two persons are avoided, and the user experience quality is improved.
Preferably, in an embodiment, the display switching module 14 is further configured to, if the video stream of the second voice-activated person with the video resolution not less than the preset value is not obtained after a delay time period started at the first time is ended, immediately display the video stream to be displayed of the second voice-activated person in a display area corresponding to the maximum video resolution of the current voice-activated person after the delay time period is ended. Therefore, in this embodiment, when the delay time is up, the video stream of the second voice-excited person is forcibly displayed in the optimal display area of the previous voice-excited person no matter whether the video stream with the higher video resolution is acquired, so that it is avoided that the user cannot see the video stream of the second voice-excited person for too long, and after the video stream meeting the requirement arrives, the video stream is automatically displayed in the optimal display area of the previous voice-excited person.
Preferably, in an embodiment, the display switching module 14 is further configured to determine whether a display area exists in other current display areas when the display area corresponding to the maximum video resolution of the current voice-excited person is occupied by the video stream of the second voice-excited person, and if the display area does not exist in other current display areas and the video stream of the second voice-excited person has a corresponding display area before occupying the display area corresponding to the current voice-excited person, reduce the resolution of the video stream to be displayed of the current voice-excited person, which is received after a preset time period after the display area corresponding to the maximum video resolution of the current voice-excited person is occupied by the video stream of the second voice-excited person, and then display the video stream to be displayed of the second voice-excited person after occupying the video stream to be displayed of the current voice-excited person after occupying the video stream of the current voice-excited person for a preset time period after the display area corresponding to the maximum video resolution of the current voice-excited person is occupied by the video stream of the second voice-excited person The voice stimulates the display area corresponding to the person in front of the corresponding display area.
The display switching module 14 is further configured to, after the display area corresponding to the maximum video resolution of the current voice-excited person is occupied by the video stream of the second voice-excited person, judging whether a display area exists in the current other display area to display the video stream of the current voice incentive person, if the display area does not exist in the current other display area to display the video stream of the current voice incentive person and the video stream of the second voice incentive person does not have a corresponding display area before occupying the display area corresponding to the current voice incentive person, and displaying the video stream to be displayed of the current voice excited person, which is received after the preset time period after the display area corresponding to the maximum video resolution of the current voice excited person is occupied by the video stream of the second voice excited person, in other unoccupied display areas after the video resolution is reduced.
Therefore, in this embodiment, if the video stream of the current voice-excited person has only one display area, when the video stream is occupied, the resolution of the delayed video stream of the current voice-excited person may be reduced and then the delayed video stream may be displayed in the original display area of the second voice-excited person or in other unoccupied display areas.
Based on the same inventive concept, an embodiment further provides a non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the steps of the video picture switching method according to any one of the above embodiments.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (10)
1. A video picture switching method, comprising:
presetting a display layout on a display screen, and dividing the display screen into a plurality of display areas;
acquiring each display area of the video stream of the current voice incentive person displayed in the current display screen and each video resolution of the video stream of the current voice incentive person displayed in the current display screen, and selecting the maximum video resolution from the display areas;
when a second voice excited person is detected, acquiring each display area of the video stream of the second voice excited person displayed in the current display screen and each video resolution of the video stream of the second voice excited person displayed in the current display screen, and selecting the maximum video resolution from the display areas;
if the selected maximum video resolution corresponding to the current voice incentive is larger than the video resolution of the video stream to be displayed of the second voice incentive and the selected maximum video resolution corresponding to the second voice incentive is smaller than a preset value, confirming a delay time period according to the current bandwidth, recording a first moment when the delay time period is confirmed, and starting to acquire the video stream of the second voice incentive with the video resolution not smaller than the preset value at the first moment;
if the video stream of the second voice excited person with the video resolution not less than the preset value is successfully acquired within the delay time period from the first moment, the video stream of the second voice excited person with the video resolution not less than the preset value is displayed in a display area corresponding to the maximum video resolution of the current voice excited person immediately.
2. The video frame switching method of claim 1, wherein obtaining respective display areas of the video stream of the second voice-activated person displayed in the current display screen and respective video resolutions of the video stream of the second voice-activated person displayed in the current display screen after detecting the second voice-activated person, and selecting a maximum video resolution therefrom comprises:
and if the video stream of the second voice excited person does not have the corresponding display area, setting the selected maximum video resolution corresponding to the second voice excited person as 0.
3. The video picture switching method according to claim 1, further comprising:
and if the video stream of the second voice incentive person with the video resolution not less than the preset value is not obtained after the delay time period started at the first moment is ended, immediately displaying the video stream to be displayed of the second voice incentive person in a display area corresponding to the maximum video resolution of the current voice incentive person after the delay time period is ended.
4. The video picture switching method according to claim 1, further comprising:
when the display area corresponding to the maximum video resolution of the current voice incentive is occupied by the video stream of the second voice incentive, judging whether the display area exists in other current display areas and the video stream of the current voice incentive is displayed, if the display area does not exist in other current display areas and the video stream of the second voice incentive has a corresponding display area before the display area corresponding to the current voice incentive occupies, displaying the video stream of the current voice incentive, which is received after the display area corresponding to the maximum video resolution of the current voice incentive is occupied by the video stream of the second voice incentive for a preset time period, in the display area corresponding to the video stream of the second voice incentive after the resolution of the video stream of the current voice incentive is reduced, wherein the video stream of the current voice incentive corresponds to the display area of the second voice incentive.
5. The video picture switching method according to claim 1, further comprising:
when the display area corresponding to the maximum video resolution of the current voice-excited person is occupied by the video stream of the second voice-excited person, judging whether a display area exists in the current other display area to display the video stream of the current voice incentive person, if the display area does not exist in the current other display area to display the video stream of the current voice incentive person and the video stream of the second voice incentive person does not have a corresponding display area before occupying the display area corresponding to the current voice incentive person, and displaying the video stream to be displayed of the current voice excited person, which is received after the preset time period after the display area corresponding to the maximum video resolution of the current voice excited person is occupied by the video stream of the second voice excited person, in other unoccupied display areas after the video resolution is reduced.
6. A video picture switching system, characterized in that the video picture switching system comprises:
a layout module for presetting a display layout on a display screen so that the display screen is divided into a plurality of display areas;
the first acquisition module is coupled with the layout module and used for acquiring each display area of the video stream of the current voice incentive person displayed in the current display screen and each video resolution of the video stream of the current voice incentive person displayed in the current display screen and selecting the maximum video resolution from the display areas;
a second obtaining module, coupled to the layout module, configured to, after a second voice-excited person is detected, obtain each display area of a video stream of the second voice-excited person displayed in the current display screen and each video resolution of the video stream of the second voice-excited person displayed in the current display screen, and select a maximum video resolution therefrom;
a delay module, coupled to the first obtaining module and the second obtaining module, configured to determine a delay time period according to a current bandwidth and record a first time at which the delay time period is determined, and start to obtain a video stream of the second voice incentive person whose video resolution is not less than a preset value at the first time if the selected maximum video resolution corresponding to the current voice incentive person is greater than a video resolution of a video stream to be displayed of the second voice incentive person and the selected maximum video resolution corresponding to the second voice incentive person is less than the preset value;
and the display switching module is coupled with the delay module and used for instantly displaying the video stream of the second voice-stimulated person, of which the video resolution is not less than the preset value, in a display area corresponding to the maximum video resolution of the current voice-stimulated person if the video stream of the second voice-stimulated person, of which the video resolution is not less than the preset value, is successfully acquired within a delay time period starting at the first moment.
7. The video screen switching system according to claim 6, wherein the display switching module is further configured to, if the video stream of the second voice-stimulated person with the video resolution not less than the preset value is not acquired after a delay time period started at the first time is ended, immediately display the video stream to be displayed of the second voice-stimulated person in a display area corresponding to the maximum video resolution of the current voice-stimulated person after the delay time period is ended.
8. The video screen switching system according to claim 6, wherein the display switching module is further configured to determine whether there is a display area in the current other display area that is displaying the video stream of the current voice-excited person after the display area corresponding to the maximum video resolution of the current voice-excited person is occupied by the video stream of the second voice-excited person, and if there is no display area in the current other display area that is displaying the video stream of the current voice-excited person and the video stream of the second voice-excited person has a corresponding display area before occupying the display area corresponding to the current voice-excited person, display the video stream to be displayed of the current voice-excited person, which is received after a preset time period after the display area corresponding to the maximum video resolution of the current voice-excited person is occupied by the video stream of the second voice-excited person, after the resolution of the video stream to be displayed of the current voice-excited person is reduced, on the second voice-excited person The video stream of the incentive person is in a corresponding display area before occupying the display area corresponding to the current voice incentive person.
9. The video picture switching system according to claim 6, wherein the display switching module is further configured to determine whether there is a display area in the other current display areas that is displaying the video stream of the current voice-excited person after the display area corresponding to the maximum video resolution of the current voice-excited person is occupied by the video stream of the second voice-excited person, and if there is no display area in the other current display areas that is displaying the video stream of the current voice-excited person and the video stream of the second voice-excited person does not have a corresponding display area before occupying the display area corresponding to the current voice-excited person, reduce the video resolution of the video stream to be displayed of the current voice-excited person received after a preset time period after the display area corresponding to the maximum video resolution of the current voice-excited person is occupied by the video stream of the second voice-excited person and display the video stream of the current voice-excited person after reducing the video resolution of the video stream to be displayed in the other unoccupied display areas The display area is used.
10. A non-transitory computer readable storage medium, on which a computer program is stored, which, when being executed by a processor, performs the steps of the video picture switching method according to any one of claims 1 to 5.
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